Eartha, the world's largest rotating and revolving globe, is located within the headquarters of the DeLorme mapping corporation in Yarmouth, Maine. The globe weighs approximately 5,600 pounds (2,500 kg), and has a diameter of over 41 feet (12.5 m). This gives it a scale of 1:1,000,000, on which one inch represents 16 miles, one millimetre represents one kilometre. As with most globes, it is mounted at a 23.5 degree angle, the same axial tilt as the Earth itself; thus the equator is diagonal to the floor. It uses a cantilever mount with two motors, and simulates one day's revolution and rotation every minute.
The globe was completed on July 23, 1998, and it uses a composite database built from satellite imagery, shaded relief, colored bathymetry, and information about road networks and urban areas. The database used to generate the surface images was approximately 140 gigabytes.
Eartha is contained in an atrium with several glass walls that allow it to be seen from outside of the building; it is readily visible from U.S. Route 1. At night, the globe is illuminated.
